John chkistie



JOHN CHRISTIE, or LOWEIL, MroHrieAN.

Letters .Patent No. 82,800, dated October 6, 1868.

IMPROVED BED-BOTTOM.

tlgr Srlgthule mgmt in in tten rtters ttmt tnt mating ont mf its stmt.

TO ALL WHOM IT MAY CONCERN: Y

Be it known that I, JOHN CHRISTIE, of Lowell, in the county of Kent, andinthe State of Michigan, have invented certain new and useful.Improvements in Bed-Bottoms; and do hereby declare that the following isa full, clear, and exact description thereof, reference being made tothe accompanying drawings, and to the letters of reference markedthereon.

In the annexeddrawings, forming part of this specication- Figure lrepresents a side view, and p Figure 2 a-rear view of the double spiralspring invalid-bed bottom.

Figure shows the manner in which thel springs ar'e fastened to theslats.

The nature of this invention consists in the double cone-shaped spiralsprings A A, the upper ends of which A are fastened together on theslats by solder and small wire, as shown in fig.' Sgand placed underltheslats'B, in

such a manner that each slat rests on two springs,-t hereby avoiding thenecessity of any steel 0r AWood c'ro'gg. bars'toequalize the springing.The short or movable-bars c of the bottom swing on a cross-bar or pivot,D, at the bottom, and are loose in the head cross-bar E, except theoutside ones, which are fastened, for the purpose of better 'adjustmentto any pressure, upon the main slats, when the short ones are elevated.This short or movable portion of the bottom, which is to be elevated forinvalide, i s supported by two cross-bars F F, and held in any desirableposition by tightening ahthumb-serew, Gr, which passes through them.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is- In a bed-bottom, composed of thesprings A A, connected .andr constructed as described, the arrangementofthe short bars C C, cross-bar E, andslotted diagonal bars F F, andscrew Gr, the whole operating as specified.

In testimony that I claim the foregoing, I have hereunto set my hand,this 7th day of-April, 1868. i y JOHN CHRISTIE.-

Witnesses:

THOMAS J. SLAYTON, WM. W. HATCH.

